Petebs



(No Model.)

1. A. TAMA/11s.

SECONDARY BATTERY.

No. 398,194. Patented Feb. 19, 1889.

i f i.

@i -Y- E-C `o EEE-N mma-Nme MM/mmo /mw fw FFICE.

ILLIIIS AUGUSTUS TIMMIS, OF 2 GREAT GEORGE STREET, IIIESTMINSTER,

COUNTY OF MIDDLESEX, ENGLAND.

SECON DARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 398,194, dated February19, 1889.

Application filed October l, 1888. Serial No. 286,863. (No model.)

.T0 @ZZ wil/0m it may concern:

Be it known that I, ILLrUs AUeus'rUs Tin- MIs, a subject of the Queen ofGreat Britain, residing at 2 Great GeorgeV Street, Iestmin` ster, in thecounty of Middlesex, England, have invented certain new and usefulImprovements in the Elements for Secondary Batteries; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, reference being had to the accompanying drawings, which formpart oi' this specification.

The obj octs of my invention are to cheapen the production, lessen theWeight, and perfect the action ot the positive elements (or, as they arecalled, the eathodes) ot' secondary bat teries. Vith these objects inView I make these elements (or cathodes) of litharge in combination witha suitable solution, preferzo ably sulphate ot' ammonia, solid-a'. e.,ina block, or rather cake or slab, of any convenient size andthickness-and reduce them in the ordinary Way-that is, I dispense withthe use of grids or racks or any ot' the numerous supports made ofconducting material devised to support the liiharge or reduced material.The supports l make of any inoxidizable ma- ,terial that I can use-suchas ebonite or other suitable materials-and by this means I overcomebuckling and the consequent destruction of the plates, and I make thecontacts preferably of lead, which I fasten against the plates orelements with inoxidizable nuts and bolts or clamps or b y any othersuitable means. Figure l is a front elevation oi' the plate, and Fig. 2is a vertical section of the same.

co represents the plate, which is made of litharge in combination withsulphate of ammonia or other suitable solution, this plate being made ofany conveniei'it size and thickness.

l) is the support, which is made of any inox# idizable material, such asebonite.

c is the contact, made preferably of lead, which is fastened against theplates by means of nuts and bolts CZ d or by other suitable means; orthe contact c can he embedded in the plate of litharge, A.

Havin g nouT described the nature oii my said invention and the mannerin which it can be carried into effect, I declare that WhatI claim 1sl.An element for secondary batteries, consisting of a plate composed oflitharge and a solution of sulphate of ammonia, and a supporting-frame,substantially as described.

2. An element for secondary batteries, consisting of a plate composed oflitharge and sulphate of ammonia, and a supporting-frame of ebonite,.substantially as described. An element for secondary batteries,consisting of a plate composed of litharge and a solution of sulphate ofammonia, and a supporting-frame of inoxidizable material, substantiallyas described.

In testimony that I claim the foregoing I have hereunto set my hand this21st day of August, i988.

ILIJUS AUGUSTUS TIMMIS.

Witnesses:

Tontas GAINsPED RIDGWAY, o II/Tflfterloo Place, London, Nota/ry.

AMBnosE FISH, Notarys Clerk, 5 I/Vazcf/Zoo Place, S. IV.

